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Endocrine Surgery E-Book

Endocrine Surgery E-Book

Thomas W J Lennard

(2013)

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Book Details

Abstract

Endocrine Surgery meets the needs of surgeons in higher training and practising consultants for a contemporary and evidence-based account of this sub-specialty that is relevant to their general surgical practice. It is a practical reference source incorporating the most current information on recent developments, management issues and operative procedures. The text is thoroughly referenced and supported by evidence-based recommendations wherever possible, distinguishing between strong evidence to support a conclusion, and evidence suggesting that a recommendation can be reached on the balance of probabilities.

This is a title in the Companion to Specialist Surgical Practice series whose eight volumes are an established and highly regarded source of information for the specialist general surgeon.

  • The Companion to Specialist Surgical Practice series provides a current and concise summary of the key topics within each major surgical sub-specialty.
  • Each volume highlights evidence-based practice both in the text and within the extensive list of references at the end of every chapter.
  • An expanded authorship team across the series includes additional European and World experts with an increased emphasis on global practice.
  • The contents of the series have been extensively revised in line with recently published evidence.
  • All the chapters reflect the multidisciplinary approach to the subject with up-to-date information on cytopathology, assays of hormones, localisation techniques, anaesthetic requirements, genetic implications and, of course, histopathology and adjuvant treatments.
  • Minimally invasive approaches continue to be promoted and developed throughout the book.
  • The text has a closer emphasis on practical and pragmatic approaches to clinical scenarios.

Table of Contents

Section Title Page Action Price
Front Cover Cover
Endocrine Surgery: A COMPANION TO SPECIALIST SURGICAL PRACTICE iii
Copyright iv
Contents v
Contributors vii
Series Editors' preface ix
Editor's preface xi
Evidence-based practice in surgery xiii
Chapter 1: Parathyroid disease 1
Part 1. Parathyroid disease, syndromes and pathophysiology 1
Introduction 1
Embryology and anatomy 1
Calcium and parathyroid hormone (PTH) regulation 2
Primary hyperparathyroidism 3
Incidence 3
Clinical manifestations 3
Diagnosis 3
Normocalcaemic hyperparathyroidism 4
Hypercalcaemic crisis 5
Surgical indications 8
Imaging and localisation 9
Ultrasound (US) 9
Computed tomography (CT) 11
Magnetic resonance imaging (MRI) 11
Thallium-201–technetium-99 m pertechnetate scan (Tl–99mTc scan) 11
Technetium-99 m sestamibi scan (sestamibi scan) 12
Parathyroid angiography and venous sampling for PTH 14
Pathology 14
Adenoma 15
Double adenoma 15
Hyperplasia 15
Carcinoma 15
Secondary hyperparathyroidism (SHP) 16
Pathogenesis 16
Hypocalcaemia and hyperphosphataemia 16
Decreased synthesis of calcitriol 16
Bony resistance to PTH 16
Changes in PTH set point 16
Aluminium intoxication 16
Presentation 17
Osseous lesions 17
Pruritus 17
Metastatic calcification 17
Calciphylaxis 17
Treatment 17
Tertiary hyperparathyroidism 17
References 18
Part 2. Operative strategy for themanagement of parathyroid disease 21
Primary hyperparathyroidism 21
Conventional open parathyroidectomy 21
Basic principles of parathyroid surgery 21
Management of surgical procedure 22
The search for superior parathyroid (P IV) 22
The search for inferior parathyroid (P III) 23
Evaluation of the initial bilateral exploration 23
Continuation of the exploration 24
The parathyroidectomy 25
Solitary parathyroid adenoma (Fig. 1.12) 25
Sporadic multiglandular disease 25
Familial hyperparathyroidism 26
Primary hyperparathyroidism in MEN1 26
Primary hyperparathyroidism in MEN2A 26
Parathyroid carcinoma 27
Parathyroidectomy associated with thyroid excisions 27
Overall results of conventional open parathyroidectomy 27
Minimally invasive parathyroidectomy (MIP) 28
Unilateral neck exploration 28
Open minimally invasive parathyroidectomy (OMIP) 28
Minimally invasive radio-guided parathyroidectomy (MIRP) 29
Endoscopic parathyroidectomy 29
MIP in the broader context 30
Intraoperative parathyroid hormone assay (ioPTH) 31
Re-operation for persistent or recurrent primary hyperparathyroidism (PHP) 31
Analysis of causes of failure 31
Management 31
Confirmation of the diagnosis 31
Case history 31
Preoperative evaluation 32
Methods of re-operation 32
The posterolateral approach (‘back-door’ approach) 33
The thyrothymic approach (‘front-door’ approach) 33
Revision of the transverse cervicotomy 33
Mediastinal approaches 33
Other focused approaches 33
Additional procedures 33
Results 33
Secondary hyperparathyroidism (SHP) 34
Hyperparathyroidism secondary to compensatory stimulation of parathyroid hormone 34
Surgical strategies 34
Perioperative care 35
Persistent and recurrent SHP 35
Lithium-induced hyperparathyroidism 36
Tertiary hyperparathyroidism 36
References 37
Chapter 2: The thyroid gland 41
Background 41
Embryology, surgical anatomy and physiology 41
Embryology 41
Thyroid anatomy 41
Recurrent laryngeal nerve and external branch of superior laryngeal nerve anatomy 41
Parathyroid anatomy 42
Thyroid physiology 42
Clinical history and examination 43
Investigation of the thyroid 43
Blood tests 44
Thyroid function tests 44
Thyroid antibodies 44
Thyroglobulin antibody 44
Thyroid peroxidase antibody 45
TSH receptor antibody 45
Biomarkers of malignant disease 45
Thyroglobulin 45
Calcitonin 45
Carcinoembryonic antigen 45
Imaging studies 45
Ultrasonography 45
Nuclear medicine studies 45
Computed tomography 45
Tissue diagnosis 46
Incidental thyroid pathology 46
Surgical pathologies of the thyroid 47
Benign conditions 47
Benign goitre 47
Causes of multinodular goitre 48
Iodine deficiency 48
Genetics 48
Goitrogens 48
Gender 48
Drugs 48
Pathogenesis 48
Management of benign MNG 48
Thyroid cysts 48
Malignant conditions 49
Molecular biology of thyroid cancers 49
Papillary thyroid carcinoma 49
Follicular thyroid carcinoma 49
Differentiated thyroid cancers (PTC and FTC) 49
Risk factors 49
Pathology 50
Papillary thyroid carcinoma 50
Follicular thyroid carcinoma 50
Staging 51
Work-up 51
Management of DTC 52
Surgery of DTC 52
Extent of thyroidectomy 52
Contraindications to total thyroidectomy 53
Lymph node dissection 53
Adjuvant treatments 54
Follow-up 54
Poorly differentiated thyroid cancer (PDTC) 54
Medullary thyroid carcinoma 54
Pathology 54
Clinical features 55
Diagnosis 55
Treatment 55
Prognosis 56
Follow-up 56
Anaplastic thyroid carcinoma 56
Other malignancies 56
Primary thyroid lymphoma 56
Squamous cell carcinoma 57
Metastatic carcinoma to the thyroid 57
Hyperthyroidism 57
Causes 57
Clinical features 57
Investigations 57
Diagnosis of thyrotoxicosis 57
Determination of aetiology 58
End-organ effects 59
Management 59
Symptomatic management 59
Management – Graves' disease 59
131 I 59
ATD 59
Management – TMNG 59
Management – TA 59
Surgical indications 59
Operative strategy 59
Preoperative considerations 59
Operative considerations 60
Postoperative considerations 61
Thyroiditis 61
Subacute thyroiditis (de Quervain's thyroiditis) 61
Autoimmune thyroiditis (Hashimoto's thyroiditis) 61
Riedel's thyroiditis 61
Acute suppurative thyroiditis 61
Postpartum thyroiditis 61
Surgery of the thyroid 62
Unilateral total thyroid lobectomy (hemithyroidectomy) 62
Preparation 62
Exposure 62
Mobilisation 62
RLN and parathyroid glands 63
Total thyroidectomy 64
Retrosternal goitre 64
Recurrent goitre 64
Neuromonitoring 64
Sutureless thyroidectomy 64
Minimally invasive and robotic surgery 64
Complications of thyroidectomy 65
Recurrent laryngeal nerve injury 65
External branch of superior laryngeal nerve injury 65
Hypoparathyroidism 65
Recurrent hyperthyroidism 65
Thyroid crisis/storm 65
Haemorrhage/airway obstruction 65
Miscellaneous 66
References 66
Chapter 3: The adrenal glands 70
Anatomy 70
Blood supply and lymphatic drainage 70
Nerve supply 70
Microscopic anatomy 70
Embryology 71
Physiology 71
Adrenal medulla 71
Catecholamine synthesis and metabolism 71
Catecholamine physiological effects 72
Adrenal cortex 72
Mineralocorticoids 72
Glucocorticoids 73
Sex steroids 73
Adrenal incidentaloma 73
Case study 1 73
Definition and incidence 73
Aetiology 73
Investigation 74
Biochemistry 74
Biopsy 74
Imaging 74
Management 75
Case study 1 (discussion) 75
Adrenocortical carcinoma 76
Case study 2 76
Incidence and aetiology 76
Clinical features 76
Biochemistry 76
Imaging 76
Diagnosis and staging 77
Treatment 77
Surgery 77
Medical 77
Prognosis 77
Case study 2 (discussion) 78
Phaeochromocytoma and paraganglioma 78
Case study 3 78
Incidence and aetiology 78
Clinical presentation 80
Biochemical diagnosis 80
Imaging 80
Medical management 81
Surgical management 82
Case study 4 82
Malignant phaeochromocytoma 82
Phaeochromocytoma in pregnancy 82
Case study 3 (discussion) 83
Case study 4 (discussion) 84
Cushing's syndrome 84
Case study 5 84
Definition and aetiology 84
Clinical features 84
Biochemical diagnosis 84
ACTH-dependent Cushing's syndrome 86
Imaging 86
Chapter 4: Familial endocrine disease: genetics, clinical presentation and management 98
Introduction 98
A brief overview of clinical endocrine genetics 98
Multiple endocrine neoplasia type 1 (MEN1) 100
Genetics 100
Presentation 101
Primary hyperparathyroidism 101
Enteropancreatic islet tumours 101
Pituitary tumours 101
Foregut carcinoids 101
Adrenocortical tumours 102
Cutaneous manifestations 102
Diagnosis 102
Management 102
Primary hyperparathyroidism 102
Enteropancreatic islet tumours 102
Pituitary tumours 104
Foregut carcinoids 104
Surveillance and screening 104
Genetic testing 104
Biochemical and radiological surveillance 104
MEN1: differential diagnosis 105
Familial isolated pituitary adenoma (FIPA) 105
Presentation 105
Management 105
Familial intestinal carcinoid 105
Multiple endocrine neoplasia type 2 106
Genetics 106
Presentation 107
Chapter 5: Endocrine tumours of the pancreas 125
Introduction 125
Insulinoma 125
Presentation 125
Diagnosis 127
Supervised standard fasting test 127
Nesidioblastosis 128
Management 129
Medical management of hypoglycaemia 129
Preoperative tumour localisation 129
Non-invasive imaging studies 129
Invasive localising procedures 129
Operative management 131
Open exploration 131
Resection of insulinoma 132
Insulinoma and MEN1 132
Laparoscopic surgery 133
Outcome 133
Gastrinoma 133
Patient presentation 134
Diagnosis 134
Management 134
Medical control of gastric acid hypersecretion 134
Preoperative tumour localisation 136
Non-invasive tumour-localising studies 136
Invasive tumour-localising modalities 137
Surgery for tumour eradication 137
Operative approach 137
Intraoperative manoeuvres to find the primary gastrinoma 137
Tumour resection 138
Gastrinoma and MEN1 139
Outcome 140
Non-functional pNETs 140
Other rare endocrine tumours of the pancreas 140
Malignant pNETs 141
Evaluation of metastatic disease 141
Surgical management 141
Non-surgical management 142
References 143
Chapter 6: Gastrointestinal neuroendocrine tumours 147
Introduction 147
Oesophageal NETs 148
Gastric NETs 149
Type 1: gastric NETs associated with chronic atrophic gastritis 149
Type 2: NETs associated with ZES in MEN1 patients 150
Type 3: sporadic gastric NETs 151
Gastrinoma 152
Poorly differentiated gastric neuroendocrine carcinomas 152
Clinical evaluation 152
Symptoms and patient history 152
Diagnosis 152
Treatment 153
CAG-associated type 1 gastric NETs 153
MEN1-related type 2 gastric NETs 153
Sporadic type 3 gastric NETs 154
Poorly differentiated NECs 154
Duodenal NETs 154
Gastrinomas 154
Somatostatin-rich NETs 154
Gangliocytic paragangliomas 155
Other duodenal NETs 155
Duodenal NECs 155
Pancreatic NETs 155
Jejuno-ileal (small-intestinal) NETs (midgut carcinoids) 156
Morphological features 156
Clinical symptoms 157
Carcinoid syndrome 158
Diagnosis 158
Biochemistry 158
Pentagastrin provocation test 159
Radiology 159
Computed tomography 159
Ultrasound 159
OctreoScan® 159
Positron emission tomography (PET) 159
Histology 159
Surgery 160
Surgical technique 161
Liver metastases 164
Liver surgery 164
Radiofrequency or microwave ablation 165
Liver embolisation 165
Liver transplantation 166
Prophylaxis against carcinoid crisis 166
Medical treatment 167
Radiotherapy 167
Survival 167
Appendiceal NETs 168
Atypical goblet-cell NETs 169
Colon NETs 169
Rectal NETs 169
Presentation 169
Diagnosis and immunohistochemistry 170
Treatment 171
Outcome 171
Recommendations 171
References 173
Chapter 7: Clinical governance, ethics and medicolegal aspects of endocrine surgery 178
Clinical governance 178
What is good practice? 179
Who should perform surgery on the endocrine glands? 179
The advantages of subspecialisation 180
Thyroid surgery 181
Chapter 8: The salivary glands 191
Introduction 191
Surgical anatomy 191
The parotid gland 191
Facial nerve 191
The submandibular gland 192
The sublingual gland 192
Investigations 192
Clinical assessment 192
Imaging 192
Fine-needle aspiration cytology 193
Sialendoscopy 194
Non-neoplastic disease of the salivary glands 194
Inflammatory conditions 194
Acute viral inflammation 194
Acute suppurative sialadenitis 195
Chronic inflammatory conditions 195
Mycobacterium tuberculosis 195
Atypical tuberculosis 195
Cat-scratch disease 195
Actinomycosis 196
Sarcoidosis 196
Sjögren's syndrome 196
Human immunodeficiency virus 197
Sialolithiasis 197
Treatment 197
Interventional sialendoscopy 198
Non-inflammatory conditions 198
Sialadenosis/sialosis 198
Salivary gland cysts 198
Post-radiotherapy xerostomia 198
Neoplastic disease 198
Benign epithelial neoplasms 199
Pleomorphic adenoma 199
Warthin's tumour 200
Other benign epithelial neoplasms 200
Management of benign epithelial neoplasms 200
Recurrent benign epithelial neoplasms 201
Benign non-epithelial neoplasms 201
Malignant epithelial neoplasms 201
Mucoepidermoid carcinoma 201
Adenoid cystic carcinoma 201
Acinic cell carcinoma 202
Polymorphous low-grade adenocarcinoma 202
Carcinoma ex-pleomorphic adenoma 202
Management of epithelial malignancies 202
Malignant non-epithelial neoplasm 202
Metastatic disease to the major salivary glands 202
Surgical principles 203
Parotid surgery 203
Partial parotidectomy 203
Deep lobe parotidectomy/total parotidectomy with facial nerve preservation 205
Radical parotidectomy 205
Extended radical parotidectomy 205
Parapharyngeal space tumours 205
Submandibular gland surgery 205
Minor salivary gland surgery 206
Surgical complications 206
Intraoperative complications 206
Facial nerve palsy 206
Frey's syndrome 206
Other postoperative complications 207
References 207
Index 211